simplex noise

[CaoYuanpu]

simplex noise

[Julian-Wyatt]

Hi,
Yes this was a minor experiment although I’m fairly sure no images generated in the paper use that function.
I was considering testing a 3D noise function where the depth of the image is the timestep in the diffusion process, but there wasn’t enough stochasticity to learn from I felt.
Hopefully that helps

[CaoYuanpu]

Hi,
Thanks for replying. But it looks like you use it in generate_simplex_noise(), which is the default for noise_fn='simplex'.
Another question is I was wondering what specific simplex noise you used for MVTEC leather dataset, rand_2d_octaves()?

[Julian-Wyatt]

I think in general I used a 3D simplex noise function due to the directional artefacts I mention on line 112.
For that there's no massively important depth slice to use so I just kept it as being dependent on t; although in theory, I feel it should work if you pick any random slice if you shuffle the seed each time.